Dust-guard for journal-boxes.



A.CHMSTMNSOM nus GUARD FusxouRNAL BOXES APPLICATION FILED APR. 25. i913- u Patented Apr. 4, 1916.

ANDREW' CIRISTIANSON,

or BUTLER, PENNSYLVANIA.

DUST-GUARD Flirt JOURNAL-BOXES.

Specication of Letters Patent.

To allee/1.0m t may concerns' Be it known thatl, ANDREW CHRISTIAN- son, a citizen of the United Sta-tes, and resident of Butler, in the county of Butler and State of Pennsylvania, have invented a new 'and useful Igunprovement in Dust-Guardsfor J ournal-Boxes; and "l do hereby declare the following to be a full, clear, and exact description thereof..k

y invention relates journal boxes and is particularly, though not exclusively, designed for use in an M. C. B. box, which has at the rear for the ing devices.

The object of the invention is to provide a device of this character which may be to dust guards for reception of dust excludplaced in position within this chamberor ltherein, and the end of l of dust Within the journal box and having means to hold it in proper position to receive the axle and to also hold it securely against the wall of the journal box around the journal opening. to eiiectually exclude dust. s

` With these objectsfin view, the invention consists in a construction and arrangement which is illustrated in the accompanying drawings in which- Figure l is a 'View in vertical section of a journal box showing the dust guard in place the axle in elevation; Fig. 2 is a face -view of the dust guard; and Fig. 3 is a sectional view on the line 33 Fig. 2 oi" the guard.

` Referring to `Eig. l of the drawings, 1 indicates 'an ordinaryv M. C. B. journal box having at the rear the double walls 2, 3,

forming a' dust guard receiving chamber 4f at the pointwhere the axle 5 enters the journal box. rlhe dust guard proper may be of a variety of forms but in the construction 6 of felt centrally apertured as at 7,

- line of stitches 10 here illustrated it comprises a body portion Fig. 2, and having secured upon either face thereof reinforcing linings S'of canvas or like strong material. The canvas linings are secured to the felt body 6 by lines of stitches 9 around the outer edges of the dust guard and by a around the aperture 7 whichk receives the axle. These lines of stitches pass through the felt body as indicated at 9 and 10 inFig. 3.v rl`he edges of the linings both at the periphery and around the aperture of the dust guard terminate just Within the edges of the felt body as 1u- Applieation filed April 25, 1913.

efectually exclude the entrance of a receptacle or -chamber guard, a preferred embodiment ofA serial no. 763,547.

. dicated at ll and l2 respectively, Figs. 2

and 3, so that the felt which is of looser texture than the canvas linings closely hugsl the axle and vspreads more or less thereon to dust and also the outside terminations of the guard may be suc'h that the exposed outer edges thereof may snugly engage the side walls and bottom of the chamber 4 between the double walls 2, 3, thus eifectually preventing the entrance of dust around the edges of the guard. y

A special 'feature of the invention, however, resides in the means for causing the dust guard to snugly engage the rear wall of the chamber llat all points adjacent to the axle.l This I'accomplish by providing means such as a looped steel s ring 13 which 1s secured at intervals to afrjlld through the canvas linings of thebady o rthe dust guard either Aby stitches or by suitable staples 14. This steel spring is of the form clearly indicated vin Fig. 3 and comprises inturned loops l5 which are utilized to receive the fastening stitches or stapleswhich thus hold Patented Apr. a, i916.

the spring against sliding or slipping on the body of the dust guard and the outturned loop portions 16 which form in effect a series of resilient springs around the axle-receiving opening of the guard which springs are compressed more or less when the device is placed in the chamber 4 between the double walls 2, 3, and hold the opposite face l of the dust guard firmly against the inside of the rear wall 3, so that no dust may gain access to the dust guard receiving chamber and thus work around into the journal box. Furthermore, these spring loops serve to hold the exposed raw edge of the feltlat `the axle and opening snugly against the axle or rather prevent the axle from pushing this.

raw edge back or out of contact with the axle. These 4spring loops also serve to hold the dust guard in proper alinement with the axle receiving opening of the journal box so that' the axle may be readily inserted Without damaging the dust guard. The double lines of stitching 9 and 10 also serve to swell or bulge the body of the dust guard between them and cause such bulged portions of the dust guard more effectually to engage the walls of the dust guard chamber 4. Thus this canvas lining and lines of stitches serve the double' purposel of maintaining the proper shapel oli/ the dust guard and also shaping it to more efectually l perform its functions as a dust excluder.

While I have herein described a particu-V larembodiment of the invention, it is to ybe understood that it may be altered in details of construction and arrangement of parts Within the scope of the appended claims.

What 'I claim is 1. A dust guard comprising a body portion of dust excluding materialhaving a lining of shape lretaining fabric secured thereto, said parts being apertured, the aperture being' shapedto receive `the axle or shaft and resilient means'arranged around said aperture to maintain the face of said dust excluding` material snugly against the Wall of the journal bearing adjacent the axle.

2. A dust guard comprising a body portion of felt apertured to receive an axle or shaft, said body portion being lined upon either side with shape retaining fabric stitched to the body continuously around said aperture and around the outer edges of the body portion and a spring member extending .continuously around .said aperture adjacent the edge thereof to hold the dust guard securely against a wall of the journal bearing adjacent the shaft.

3. A dust guard comprising a body portion of felt apertured to receive a shaft or axlehaving lining layers of shape retaining fabrics secured to either face thereof, the edges of said lining layers adjacent said apertures terminating within the edges of the felt leaving the felt free to engage the axle or Shaft and a spring member comprising a Series of outwardly extending loops secured to said dust guard and extending continuously around the aperture therein to hold the axle engaging edges of the dust guard securely against an adjacent `Wall ofthe journal bearing and to maintain the edge of the dust guard snugly in engagement with the axle or shaft.

4. A dust guard for journal boxes, coIn-' prising a body portion of dust' excluding material apertured to receive an axle or shaft and an annular spring istrip secured to one face of said body portion adjacent the aperture thereof to force said body p0rtion against one Wall of the journal box and -to hold the material of the body portion in close engagement with the shaft or axle.

A dust guard for a journal bearing comprising a body portion of dust excluding material apertured to receive an axle or shaft, and a spring ringcomprising a series of outwardly extending loops and intermediate inwardly extending loops, the latter being secured to said dust guard, said ring extending continuously around the aperture in the body portion to hold the axle engag.

adjacent wall of the journal bearing and to.

permit the portions of the body portion both within and without the ring to spread laterally whereby they may adequately fill the dust guard receiving socket in the bearing to exclude the dust therefrom.

In testimony whereof .I the Said ANDREW CHRISTIANSON, have hereunto set my hand.

` ANDR-ElV CHRISTIANSON.

lVitnesses:

ROBERT C. To'r'rEN, JOHN F. lNILL. 

